1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* recogtest4.c
*
* Test document image decoding (DID) approach to splitting characters
* This tests the low-level recogDecode() function.
* Splitting succeeds for both with and without character height scaling.
*
* But cf. recogtest5.c. Note that recogIdentifyMultiple(), which
* does prefiltering and splitting before character identification,
* does not accept input that has been scaled. That is because
* the only reason for scaling the templates is that the recognizer
* is a hybrid BAR/BSR, where we've used a mixture of templates from
* a single source and bootstrap templates from many sources.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "string.h"
#include "allheaders.h"
static PIX *GetBigComponent(PIX *pixs);
l_int32 main(int argc,
char **argv)
{
char buf[256];
l_int32 i, item;
l_int32 example[6] = {17, 20, 21, 22, 23, 24}; /* for decoding */
BOXA *boxa;
PIX *pix1, *pix2, *pixdb;
PIXA *pixa1, *pixa2;
L_RECOG *recog;
if (argc != 1) {
lept_stderr(" Syntax: recogtest4\n");
return 1;
}
setLeptDebugOK(1);
lept_mkdir("lept/recog");
/* Generate the recognizer */
pixa1 = pixaRead("recog/sets/train01.pa");
#if 1 /* scale to fixed height */
recog = recogCreateFromPixa(pixa1, 0, 40, 0, 128, 1);
#else /* no scaling */
recog = recogCreateFromPixa(pixa1, 0, 0, 0, 128, 1);
#endif
recogAverageSamples(&recog, 1);
recogWrite("/tmp/lept/recog/rec1.rec", recog);
/* Show the templates */
recogDebugAverages(&recog, 1);
if (!recog) {
lept_stderr("Averaging failed!!\n");
return 1;
}
recogShowMatchesInRange(recog, recog->pixa_tr, 0.0, 1.0, 1);
/* Get a set of problem images to decode */
pixa2 = pixaRead("recog/sets/test01.pa");
/* Decode a subset of them. It takes about 1 ms to decode a
* 4 digit number, with both Viterbi and rescoring (debug off). */
for (i = 0; i < 6; i++) {
/* if (i != 3) continue; */ /* remove this comment to do all 6 */
item = example[i];
pix1 = pixaGetPix(pixa2, item, L_CLONE);
pixDisplay(pix1, 100, 100);
pix2 = GetBigComponent(pix1);
boxa = recogDecode(recog, pix2, 2, &pixdb);
pixDisplay(pixdb, 300, 100);
snprintf(buf, sizeof(buf), "/tmp/lept/recog/did-%d.png", item);
pixWrite(buf, pixdb, IFF_PNG);
pixDestroy(&pixdb);
boxaDestroy(&boxa);
pixDestroy(&pix1);
pixDestroy(&pix2);
}
pixaDestroy(&pixa1);
pixaDestroy(&pixa2);
recogDestroy(&recog);
return 0;
}
static PIX *
GetBigComponent(PIX *pixs)
{
BOX *box;
PIX *pix1, *pixd;
pix1 = pixMorphSequence(pixs, "c40.7 + o20.15 + d25.1", 0);
pixClipToForeground(pix1, NULL, &box);
pixd = pixClipRectangle(pixs, box, NULL);
pixDestroy(&pix1);
boxDestroy(&box);
return pixd;
}
|
GitWeb